/ ciao4.16 / dictionary / deadtimefactor.html
Please read CXC Director Dr. Pat Slane's A Letter to the Community regarding NASA's plans to decommission Chandra.
DTF: the HRC Dead-Time Factor file
Multiple meanings of DTF
DTF can also refer to Data Text Format.
HRC observations include a dead-time factor file, with the label dtf1, which lists the dead-time correction factor, as a function of time, for the observation. This file is used to calculate - or correct - the DTCOR header keyword.
/ ciao4.16 / dictionary / deadtimefactor.html